Stocks defy gravity, resist pull of lousy US data By: CNBC.com News February 21, 2014 at 09:53 AM EST Why are stocks advancing with such poor US data? Though not all indices are up this week, the S&P 500 has a good shot at posting three up weeks. Read More >> Related Stocks: Concert Pharmaceutic Facebook Google, Inc. Mohawk Industries Netflix Tesla, Inc. The Priceline Group